Yafei Li, Kyeinfar Lyu, Dehuai Liu, Xiaocheng Lan, Tiefeng Wang
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引用次数: 0
Abstract
The hydrogenation of ethyl levulinate (EL) to γ-valerolactone (GVL) is an important process in biomass conversion to value-added chemicals. However, it remains challenging to develop efficient non-noble metal catalysts with high activity and selectivity for this reaction. Herein, we investigated the effect of second metal modification on Ni3P catalysts, where a series of Ni-P-M/Al2O3 and Ni-M/Al2O3 catalysts (M = Fe, Co, Cu, and Zn) were prepared for EL hydrogenation. The results show that Ni-P-Cu/Al2O3 exhibited the highest activity, being 2.3 and 1.7 times more active than Ni-Cu/Al2O3 and Ni-P/Al2O3, respectively. Reaction evaluations at different temperatures revealed that Ni-P/Al2O3 and Ni-P-Cu/Al2O3 have a similar activation energy of ∼65 kJ/mol, lower than that of Ni-Cu/Al2O3 (86 kJ/mol). The combined characterization and reaction results suggested that the introduction of Cu enriched surface P in the Ni-P-Cu/Al2O3 catalyst, providing more active sites to enhance CO hydrogenation. These findings provide insights for optimizing non-noble metal catalysts for EL hydrogenation.
期刊介绍:
Catalysis Today focuses on the rapid publication of original invited papers devoted to currently important topics in catalysis and related subjects. The journal only publishes special issues (Proposing a Catalysis Today Special Issue), each of which is supervised by Guest Editors who recruit individual papers and oversee the peer review process. Catalysis Today offers researchers in the field of catalysis in-depth overviews of topical issues.
Both fundamental and applied aspects of catalysis are covered. Subjects such as catalysis of immobilized organometallic and biocatalytic systems are welcome. Subjects related to catalysis such as experimental techniques, adsorption, process technology, synthesis, in situ characterization, computational, theoretical modeling, imaging and others are included if there is a clear relationship to catalysis.